Two major-effect loci influence interspecific mating in females of the sibling species, Drosophila simulans and D. sechellia.

ABSTRACT: Secondary contact between incompletely isolated species can produce a wide variety of outcomes. The vinegar flies Drosophila simulans and D. sechellia diverged on islands in the Indian Ocean and are currently separated by partial pre- and postzygotic barriers. The recent discovery of hybridization between D. simulans and D. sechellia in the wild presents an opportunity to monitor the prevalence of alleles that influence hybridization between these sibling species. We therefore sought to identify those loci in females that affect interspecific mating, and we adapted a two-choice assay to capture female mate choice and female attractiveness simultaneously. We used shotgun sequencing to genotype female progeny of reciprocal F1 backcrosses at high resolution and performed QTL analysis. We foun

SUBMITTER: Lu K 

PROVIDER: S-EPMC11797031 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature